Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:25:58 2012

Optimize a model with 255 rows, 275 columns and 910 nonzeros
Presolve removed 0 rows and 30 columns
Presolve time: 0.00s
Presolved: 255 rows, 245 columns, 880 nonzeros
Variable types: 0 continuous, 245 integer (244 binary)
Found heuristic solution: objective 44.0000000

Root relaxation: objective 0.000000e+00, 174 iterations, 0.00 seconds

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0    0.00000    0  110   44.00000    0.00000   100%     -    0s
H    0     0                      41.0000000    0.00000   100%     -    0s
H    0     0                      26.0000000    0.00000   100%     -    0s
H    0     0                       8.0000000    0.00000   100%     -    0s
     0     0    0.32432    0  112    8.00000    0.32432  95.9%     -    0s
     0     0    0.80000    0  114    8.00000    0.80000  90.0%     -    0s
     0     0    0.80000    0  114    8.00000    0.80000  90.0%     -    0s
     0     2    0.80202    0  114    8.00000    0.80202  90.0%     -    0s
*   41    27              30       6.0000000    1.00000  83.3%  27.3    0s
H   54    30                       5.0000000    1.00000  80.0%  24.9    0s
*  106    18              12       4.0000000    1.00000  75.0%  27.0    0s

Cutting planes:
  Gomory: 4
  Mod-K: 1

Explored 179 nodes (5821 simplex iterations) in 0.19 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%